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Rope Threaded Self-Drilling Anchor Bolt

R51 Self-Drilling Soil Nail
R25 All Threaded Self-Drill Rock Bolt
R32 Self-Drilling Anchor Rock Bolt
R38 Hollow Threaded Drilling Anchor Bolt
A good alternative to DYWI Hollow Drill Rods or MAI SDA. Self-drilling, injection anchoring systems for underground works.